Let's give this some additional emphasis. We don't want people to accidentally miss the fact that this endpoint uses a different domain.

Quick-and-dirty solution: Make it bold.

Or, an alternative: Use the [alert][1] style.

[1]: https://github.com/github/developer.github.com/blame/40ea112e4441e04b8232a2e3d471cc675cd67a9a/content/v3/search.md#L12